Strap for Saint-Imier Chronograph

The lug width of the Longines Saint Imier L2.753.4.72.6 is 20mm. This measurement refers to the internal distance between the two lugs where the strap is inserted. It should be measured perpendicular to the lugs and is essential for selecting a compatible strap without error.

For the Saint-Imier L2.753.4.72.6, alligator leather in dark brown tones represents the most historically coherent and versatile choice. Shell cordovan develops a rich patina over time and adds character. Vegetable-tanned calf is ideal for daily wear. Rubber FKM or technical NATO fabric straps provide practicality for informal contexts. The choice depends on your primary use and aesthetic preferences.

To change the strap, you must remove the pins (spring bars) connecting the strap to the case lugs. Use a dedicated strap removal tool or a small hammer with a Teflon tip to avoid scratching. Every movement should be slow and controlled. It is advisable to have the watch serviced by an expert if you lack experience, to prevent damage to the delicate lugs.

Yes, any strap with a 20mm lug width is compatible with the Saint-Imier L2.753.4.72.6. Artisanal quality straps manufactured for this specification guarantee the same precision standard as original straps. It is important to verify that the pins used have the same diameter (typically 1.3mm) and that the total length is adequate for your wrist.

The lifespan of a leather strap depends on the material and usage intensity. Alligator and shell cordovan resist 5–8 years with moderate use and regular maintenance. Vegetable-tanned calf, being softer, lasts 3–5 years. Exposing the strap to excessive moisture, corrosive perspiration, and direct heat shortens its life significantly. Good practice involves rotating between multiple straps and cleaning regularly with a soft cloth.